/Engine/Source/Editor/ContentBrowserData/Public/ContentBrowserItem.h
Attempt to append the given item to this one, providing error information if the combination isn't possible.
True if the combination was possible, false otherwise.
bool TryAppend ( const [FContentBrowserItemData](API\Editor\ContentBrowserData\FContentBrowserItemData) & InOther, [FText](API\Runtime\Core\Internationalization\FText) * OutError )